Rotary bolt



2 Sheets-Sheet 1.

(No Model.)

J. H. WALSH.

ROTARY BOLT.

Patented Feb. 26, 1889.

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2 Sheets Sheet 2.

(No Modem J. H. WALSH.

ROTARY BOLT.

N0. 398,478. Patented Feb. 26, 1889.

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J OHN H. \VALSH, OF MASON CITY, IOIVA.

ROTARY BOLT.

SPECIFICATION forming part of Letters Patent No. 398,478, dated February26, 1889.

Application filed April 2 5, 1 8 S 7.

To all whom it may concern.-

Be it known that 1, JOHN H. \VALsH, a citizen of the United States,residing at Mason City, in the county of Cerro Gordo and State of Iowa,have invented certain new and useful Improvements in Flour-Dressers, ofwhich the following is a specification.

This invention relates to flour-dressing machinery of the class commonlyknown as fioun bolts and my object is to so improve the construction ofsuch machine as to secure a more perfect and economical bolting of theflour, and by means comparatively cheap and simple.

The invention consists in the novel construetion and combination ofparts hereinatter described, andpointed out in the claims.

In the accompanying drawings, forming a part of this specification,Figure 1 represents a side elevation of a machine embodying my inventionwith a portion of the upper part removed, showing the interiorarrangement of the reel and connected apparatus; Fig. 2, an end View ofthe same, but with a modified form of actuating mechanism; Fig. 3, asimilar View of Fig. 1, the outer head or disk of the frame beingremoved and portions of the internal gear of the cylinder-ring brokenaway to show the arrangement of the pa] ts inside; Fig. i, a fragmentaryview of a modification in the construction of the reel and connectedparts, showing also an intermediate stay-ring and the adjustment of thesame; Fig. 5, detail of the chain-belt connection with the elevators;Fig. 6, an elevation of the conveyer and its immediate connections fromthe side nearest the bolting-cloth; Fig. 7, a transverse sectional viewlooking toward the tail of the machine, and Fig. 8 a fragmentary viewshowing the attachment of the bolting-cloth to its end ring in detail.

Similar letters of reference indicate corresponding parts.

The frame A is in the main similar to those in common use and need notbe particularly described. To each end of this frame is at tached a heador disk, 13, by means of suitable.

lugs or flanges, 13 B. An annular flange, 1),

[ are fitted to the annular flange of the head B and may be arranged toturn inside or outside of said flange, as shown in Figs. 1 and 4. Therings are actuated by suitable gearing, and for this purpose areprovided. with internal or external gear-teeth, as may be desired. Inpractice I prefer to use an internal gear on the ring, because a singlepinion meshing with it revolves the cylinder in the proper direction,whereas in the case of external gearing the number of wheels must beincreased, as shown in Fig. 2.

In suitable boxes, a a, which may be permanently or adj u stablyattached to the heads B B, are mounted shafts E E E l5, which extendthrough the entire length of the reel. 5 To one of theseshaftspreferably li1-is secured a pinion, F, which, meshing with theinternal gear of the ring 0, actuates the same as the shaft is revolvedby the pulley G. \Vithin the reel and a short distance back from the endrings sprocketwheels' I I I are mounted on the shafts E E and carrychain belts J J. .lln'ough that are of the circle intersecting heperiphery of the sprocket-wheels nearest the bolt-cloth the chain beltsare distended to the same rela' tive curve as the adjacent inside of thec vl inder by means of guides c, secured to the inner face of the headsl3 13. The friction of the chain belts on the face oi. these guides isrelieved by the intermediate travelers, I. At suitable distances alonthese chain belts are attached elevators II ii, which are in the natureof troughs, as shown, and extend the .whole length of the interiorbciting-surface of the reel. The elevators are set about half an inchfrom the bolt-cloth through a considerable part of their circuit, asshown, and as the reel revolves in the direction indicatedby the arrowsgather up the stock in the bottom y direction, depositing it graduallyalong the j inner surface of the bolt-cloth (7. Any stock that mayremain in the elevatcn's after passing above the horizontal center ofthe reel is carried over and deposited in the trough of the conveyer L,to be moved farther toward. the tail of the machine and, as worked outof the conveyer-trough, carried around with the reel until thoroughlybolted.

It is desirable that the elevators should IOO move with. the same speedas the boltcloth, so that the bolting may be as gentle as possible, andneither hastened nor retarded by the action of the elevators beyond thenatural ea- 5 pacity of the bolt-cloth to iiroperly sift the flour. Tosecure this result in the case of the construction shown in Figs. 1 and3 requires that the pinion. F should be somewhat smaller than thesproeketwheels I I I, the exact relative size of the wheels and gearingbeing determimible by careful mathematical calculation but where, as inthe case of the construction shown in Fig. 2 intermediate gearing isused to actuate thereel the size of the pinion is not very material, theproper speed being easily secured by the comparative size of theintern'iediate gears, c 6'. Of course these gears may mesh directly orbe connected by chain belt, provision being made for the correspondingchange in the direction of their revolution.

The bolt-cloth d is attached. to wooden or metallic rings ff, secured byscrews or bolts to the rings 0 In practice I attach the canvas, (7, orother like suitable material, is sewed to each end of the bolt-cloth andprovided with button-holes. The interior or periphery of the ring, asthe ease maybe,is provided with a series of studs or buttons, i i, andthe canvas end of the cloth is brought around the ring and buttonedthereon. By means of set-screws 7t 71 the bolt-cloth may then bestretched to any desired extent. One or two rings may be used at eachend, as shown. Where two are used, as shown in Fig. 'l,the outer ring isof course not drawn tightly to its place until the cloth is stretched bythe inner one.

The middle portion of the reel is made perfectly true by the use of oneor more stayrings, g, the periphery of which is faced with felt or thelike and the inside turned perfectly true. The bolt-cloth is sewed tothis felt, and the position of the ring is adjusted by the setscrews 7cin the rods D D. On one or more of the shafts carrying thesprocket-wheelspreferably the upper and lower onestravelers M areloosely mounted, and, following this ring, serve to support and steadythe middle of the reel.

The flour-conveyor L is mounted within and at the descending side of thereel, and revolves in a direction opposite thereto, working the flourover the outward edge of the trough N and toward the tail of the ma-'chine, which is at the left in Fig. 1 and at the right in Fig. U. Thestock is admitted to the conveyer by and through the inlet-spout R, Fig.(5, flows over the edge of the conveyer-trough in a thin sheet, andfalls be tween the bolt-cloth and an. apron, O, corresponding iractically to the curvature of the reel and extending from the edge ofthe trough. to nearthe bottom of the reel. As before stated, theunbolted portions of the stock are carried over by the elevators andbolt cloth in the following manner: Strong redepositediu the conveyor,where the action of the conveyor-Iiights tends to break up any balls orlumps that may have accumulated, especially in the case of moist flour.The middlings'pass out through the tail-spout s. This and other featuresof the invention already described render it of special value in thematter of rebolting where the first process has been imperfect.

The flow of the stock toward the tail of the machine is regulated by therelative height and inclination of the outer edge of the trough N; Atthe head of the machine this should be high enough to p revent the stockbeing thrown over the edge until some distance from the head, and forthis reason the outer edge of the trough is quite sharply inclined here,as shown in Fig. 1. For the remainder of the operative length of thetrough the incline may be very gradual, or the edge of the trough may bemade quite horizontal, as may be found desirable. This part of themachine may be made adjustable by making that partof the trough thatserves for the outer edge of a separate piece suitably bolted to thetrough itself.

Above the conveyer is mounted a revolving brush, P, mounted in the samemanner as the shafts before referred to. This should revolve in theopposite direction from the reel, and serves to clear the bolt-cloth ofadhering flour. 'ly an adjustment of its journals its distance from thebolt-cloth may be regulated.

A simple manner of attaching the elevators to the chain belt is shown inFig. 5. The linkl is of a common form, having lateral lugs to receive apin, on. To the under side of the elevator K is attached a lug, n,engaging with those of the link. The elevator is prevented from turningon the link by the projections-o 0, resting on the top of said link.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a flour-dresser, the combination of a cylinder or reel,substantially as described, stationary heads upon which the reel revolves, shafts mounted in said heads and provided with sprocket-wheels,chain belts carried by said sprocket-wheels, elevators mounted on saidchain belt within said reel, and mechanism, substantially as described,adapted to rotate the reel and carry said elevators in. proximity to aportion of its interior, substantially as and for the purpose set forth.

2. In a flour-dresser, the combination of the closed heads B B, theopen-ended reel, substantially as described, mounted thereon,sprocket-wheels I I 1, chain belts J J, and elevators K K, substantiallyas and for the purpose set forth.

Y 3. In combination withan open-ended flourbolting reel, substantiallyas described, the sprocket-wheels I I 1, traveler 1, guides c c,elevators K K, chain belts J J, and mechanism, substantially asspecified, whereby simultaneous motion is imparted .to the reel and theelevators, as set forth.

4. In combination with the reel of a flourdresser and With suitable feedand discharge spout-s, an internal conveyer adapted to discharge thestock at one side of the reel, and a trough for said conveyer, havingits discharge side inclined, whereby the flow of the stock over the edgeof the trough is made uniform, substantially as specified.

5. In combination with the reel of a flourdresser and with suitable feedand outlet spouts, an internal conveyer, adapted to dis charge the stockat one side of the reel, and

Witnesses:

S. W. BRAINERD, S. W. NORTON.

